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Crystallisation behaviour and mechanical properties of HDPE/EPDM blends

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Abstract

The crystallisation behaviour of binary blends of high density polyethylene (HDPE) and ethylene-propylene-diene tercopolymer (EPDM) was investigated using differential scanning calorimetry (DSC) and wide angle X-ray diffraction studies (WAXS). The rate of crystallization and nucleation of HDPE was influenced by the addition of EPDM. The% crystallinity (WAXS) increased up to 25% (w/w) addition of EPDM to HDPE. A significant improvement in tensile and impact properties was observed upon addition of EPDM to HDPE.

Zusammenfassung

Mittels Differential-Scanning-Kalorimetrie (DSC) und Weitwinkelröntgendiffraktion (WAXS) wurde das Kristallisationsverhalten von binären Gemischen aus hochverdichtetem Polyäthylen (HDPE) und Äthylen-Propylen-Dien Trikopolymer (EPDM) untersucht. Die Geschwindigkeit von Kristallisation und Keimbildung von HDPE wird durch Zusatz von EPDM beeinfluß. Die prozentuelle Kristallinität wuchs bis zu einer Zugabe von 25 Gewichtsprozenten EPDM zu HDPE an. Bei Zusatz von EPDM zu HDPE konnte eine eindeutige Verbesserung der Zug- und Stoßfestigkeitseigenschaften festgestellt werden.

Резюме

Методом ДСК и широкоу глового рассеяния рентгеновских лучей изучена кристаллиза ция двойных смесей полиэ тилена высокой плотн ости (ПЭВП) и этилен-пропилен-диен тройного сополимера (ЭПДМ). Скорость криста ллизации и образование центров кристаллизации ПЭВП затрагивалась п рибавлением к нему ЭП ДМ. Процент кристалличности сме си увеличивался при доб авлении ЭПДМ в количе ствах до 25 вес.%. Прибавление ЭПДМ к ПЭВП приводило к улучшени ю противоударных и противорастягивающ их свойств полиэтиле на.

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Authors and Affiliations

  1. Centre for Materials Science and Technology, Indian Institute of Technology, 110016, New Delhi, India

    H. S. Varma, V. Choudhary & I. K. Varma

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  1. H. S. Varma
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  2. V. Choudhary
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  3. I. K. Varma
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Varma, H.S., Choudhary, V. & Varma, I.K. Crystallisation behaviour and mechanical properties of HDPE/EPDM blends. Journal of Thermal Analysis 35, 1257–1266 (1989). https://doi.org/10.1007/BF01913046

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